Pattern-cylinder for use in the manufacture of paper lace and the like.



PATENTED OCT. 10, 1905.

M. HBIMANN. PATTERN CYLINDER FOR USE IN THE MANUFAGTURE OF PAPER LACEAND THE LIKE.

APPLICATION PILBD FEB. 29.1904.

UNITED STATES ATENT OFFICE.

MOSES HEIMANN, OF BERLIN, GERMANY.

PATTERN-CYLINDER FOR USE IN THE MANUFACTURE OF PAPER LACE AND THE LIKE.

Specification of Letters Patent.

Patented Oct. 10, 1905.

Application filed February 29,1904. Serial No. 195,921.

[0 Il /Z whom it iii/(Ly cancer/2 Be it known that I, Moses IIEDIANX, asubject of the German Emperor, residing at Berlin, Germany, haveinvented certain new and useful Improvements in Pattern-Cylinders forUse in the Manufacture of Paper Lace and the Like, of which thefollowing is a specification.

This invention relates to improvements in pattern-cylinders for use inthe manufacture of paper lace.

Heretofore for the manufacture of paper lace an engraveduntcmpered-steel patterncylinder is usually used, which works inconjunction with a lead cylinder, or an engraved tempered-steelpattern-cylinder is used working in conjunction with asimilarly-ternpered smooth steel cylinder.

WVith a tempered engraved pattern-cylinder, which works against asimilarly-ternpered smooth cylinder, which is of equal hardness, it isimpossible to manufacture line paper lace, because with tempered steelthe fineprojecting parts of the pattern easily break or do notsufficiently cut out the paper. The cylinders are also often distortedin the tempering, so that their meeting surfaces require to be polishedby means of an emery-wheel. In the latter case it frequently occurs thatthe cylinders out very badly or that they become quite useless.

The untcmpered engraved cylinders working against lead cylinders alsohave the disadvantage that the efliciency of the apparatus is verysmall, and that the manufacture of paper lace is extremely expensive,owing to the wear of the metals, and, moreover, the frequent polishingand turning cause a great loss of time. Further, the lead-dust producedin the manufacture is very dangerous to health, and lead-poisoning ofthe workmen has frequently occurred. Another (:lisadvantage is the factthat it is very difficult to print the paper, as owing to the continualwear of the lead cylinder the printing-cylinder does not work incoincidence with the engraved steel cylinder and has to be continuallyadjusted.

The pattern-cylinders to which this invention relates remove all theabove-mentioned disadvantages.

Figure 1 of the annexed drawings is aplan view, and Fig. 2 a section, ofthe improved cylinders.

\Vith these pattern-cylinders paper lace with large and line patternscan be manufactured, and the efliciency of the apparatus is much greaterthan hitherto.

The improvements in the pattern-cylinders consist in the employment incombination of a tempered-steel cylinder (1', on which the pattern (Z isengraved in relief with an untcmpered-steel cylinder 7), originallysmooth, but having the pattern a impressed deep enough into its surfaceby the rolling action under pressure of the aforesaid tempered cylinderto insure a uniform cutting of the paper.

At the ends of the tempered cylinder are rings 0 of untcmpered steel.The aforesaid rings which serve for protecting the raised pattern whenthe cylinder is not in use are already used in paper-lace machines; butthey have hitherto always been of the same degree of hardness as thepattern on the cylinder.

\Vith the improved cylinders the protecting steel rings are unternpered,since if tempered they would soon prevent or retard the edges of thepattern from cutting the paper, whereas the untcmpered rings aremalleable enough to be compressed or spread under the pressure ofrolling to allow the tempered pattern to engrave itself on theuntcmpered cylinder.

\Vith the improved cylinders polishing or setting of the engravings 01'edges is not necessary, since the lower untempered cylinder fits exactlyinto the upper engraved cylinder, even if the latter should have becomedistorted in the tempering.

Contrary to the old systema separate lower cylinder is necessary foreach engraved cylinder; but this is a trifling drawback compared withthe great advantages obtained and the greater efliciency of the newcylinders.

The combination of a relief engraved tempered-steel cylinder having asofter untempered-steel ring at each end thereof, and an untcmperedsofter steel cylinder in juxtaposition to said first-mentioned cylinder,on which softer steel cylinder the pattern has been impressed byrotation under pressure against the tempered cylinder for the purposeset forth.

.In witness whereof I have signed this specification in the presence oftwo witnesses.

MOSES HEIMANN.

'itnesses:

H ENRY I-IASIER, WoLnmmR HAUr'r.

